The flexographic plate making is the process of transferring the pictures and text to the printing plate through the negative picture film, which mainly includes the following procedures:
(1) Expose the plate with ultraviolet light. Its function is to determine the height of the relief on the plate, that is, the depth of corrosion, and to solidify the substrate.
(2) Expose the printing plate together with the film under UV light to form the printed part of the graphic and cure it.
(3) The printing plate is placed in a solvent and brushed, the purpose is to brush away the unexposed part of the plate, so that the graphic part forms a relief.
(4) Place the printing plate in a dryer to dry, so as to prompt the solvent absorbed in the plate material to evaporate as soon as possible, and restore the thickness of the printing plate to the original standard value.
(5) Post-exposure and debonding treatment of the dried plate material can further solidify the shoulder and the base, and improve the printing performance of the flexible plate. The high-quality flexographic printing plate should have a print resistance rate greater than 500,000 prints, or even as high as 1 million prints.
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